The 1746979-1 is a 121-position plug header connector from the Timer Connectors & Accessories series. It features a black PBT GF housing and is preloaded with 121 phosphor bronze tab contacts that have tin plating. The connector is designed with a 2.54 mm centerline and is classified as a JPT type. It is wave solder capable up to 240°C, ensuring compatibility with standard assembly processes. This automotive header is ideal for use in Electronic Control Units (ECUs) and other vehicle systems requiring a high-density, reliable connection.